Choir classes are designed to enhance students' musical abilities and help them in their ensemble playing in orchestra, percussion and strings classes. There is also a strong social component to choir repertoire selection so that students learn lyrics that support Sistema Toronto’s social curriculum (empathy, attidude, effort) or promote our mission for diversity.

In 2017-18, Sistema Toronto students learned and performed choir repertoire in Canada's two official languages as well as Inuktituk, Cherokee, Japanese, Akan, and Maori.